Call your agent and if he balks go to another agent. I've bought enough vehicles over the years
and all I've needed to do is call my agent and tell him what exactly it is I'm buying and when I'm picking it up. They start the paperwork and carry it as a "binder" until I can get in with the registration
, etc. Usually good for five days.
Also, my trailer is covered under my Tug insurance while under tow. I carry Comp only for when it's parked, and that's good for either while camping or next to my house. My insurance carrier is Farmers and it costs me <$100 a year...and that's for "replacement" value. All I think is good luck
I figure the best insurance is the kind you NEVER have to use.